Senior Full Stack Developer Up to £100k (DOE) London (x1 a week in office) Tech4Good Join a fast-growing SaaS company thats redefining how people engage with rewards and experiences. This innovative platform turns everyday moments into extraordinary opportunities, combining cutting-edge technology with a mission-driven approach. With a strong focus on customer engagement and sustainability, this business creates a seamless digital experience that brings excitement while making a positive impact. As part of this dynamic team, youll have the opportunity to work in a forward-thinking, fast-paced environment where creativity, innovation, and purpose drive everything they do. What you'll do: You will be critical to designing, building and scaling their platform. You'll own end-to-end delivery of features, contribute to architectural decisions and ensure their infrastructure can scale as they do, capable of supporting significant growth Skills required: You'll design and develop scalable backend features using Node.js, NextJS and AWS Lambda. On the frontend you'll be an expert in building features using Next.js, React and Typescript. You'll like to mentor junior engineers and foster a welcoming, collaborative development environment. 5 years of commercial experience (minimum) Expertise in AWS environments, deep understanding of services like Lambda, API Gateway, S3 and RDS. Experience with CI/CD pipelines and automated testing Knowledge of Fintech/Financial services would be an advantage. Familiarity with serverless architectures and microservices design principles. If you're looking for a role where you can shape the future of an exciting SaaS platform while making a meaningful difference, this is the perfect place to grow your career.